Uwell Crown IV Dual SS904L Coil utilizes high quality steel and organic cotton, 0.2ohm(70-80w) and 0.4ohm(60-70W) available. Both have long lifespan and offer an amazing flavor. Dual SS904L coils is only designed for Crown IV tank. 4pcs in a pack.

The Uwell Crown 4 Mesh Replacement Coils, or UN2 FeCrAl coils, are composed of Iron, Chromium, and Aluminum. These metals are bonded together and then manufactured into a mesh design to deliver a vaping experience like nothing else on the market to date. These UN2 atomizer heads have a resistance of 0.23 ohm and are rated for use between 60-70W. At these wattages, the UN2 coils provide outstanding flavor enhancement as well as massive cloud production and a smooth draw.